Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP5968427B2 - Pipe joint, air conditioner, connection pipe, and connection method - Google Patents
[go: Go Back, main page]

JP5968427B2 - Pipe joint, air conditioner, connection pipe, and connection method - Google Patents

Pipe joint, air conditioner, connection pipe, and connection method Download PDF

Info

Publication number
JP5968427B2
JP5968427B2 JP2014509091A JP2014509091A JP5968427B2 JP 5968427 B2 JP5968427 B2 JP 5968427B2 JP 2014509091 A JP2014509091 A JP 2014509091A JP 2014509091 A JP2014509091 A JP 2014509091A JP 5968427 B2 JP5968427 B2 JP 5968427B2
Authority
JP
Japan
Prior art keywords
pipe
joint
insertion hole
pipe joint
nut member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2014509091A
Other languages
Japanese (ja)
Other versions
JPWO2013150858A1 (en
Inventor
牧野　浩招
浩招 牧野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of JPWO2013150858A1 publication Critical patent/JPWO2013150858A1/en
Application granted granted Critical
Publication of JP5968427B2 publication Critical patent/JP5968427B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B21D17/025—Forming single grooves in sheet metal or tubular or hollow articles by pressing by pressing tubes axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F16L19/0283—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/221—Preventing leaks from developing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Description

本発明は、管継手、空気調和機、接続管、及び接続方法に関する。 The present invention is a pipe joint, an air conditioner, the connection pipe, relates 及 beauty connection method.

管同士を接続したり、流体の供給源の接続口と管とを接続したりする場合には、用途に応じた管継手が用いられる。例えば、空気調和機の冷媒を流すための冷媒管と、空気調和機の室内機や室外機の接続口部との接続には、一般に、ＪＩＳ Ｂ ８６０７で規定されたフレア管継手が用いられる（例えば、特許文献１参照）。   When connecting the pipes or connecting the connection port of the fluid supply source and the pipe, a pipe joint corresponding to the application is used. For example, a flare pipe joint defined in JIS B 8607 is generally used for connection between a refrigerant pipe for flowing a refrigerant of an air conditioner and a connection port of an indoor unit or an outdoor unit of the air conditioner ( For example, see Patent Document 1).

特開２００３−７４７６８号公報Japanese Patent Laid-Open No. 2003-74768

特許文献１に開示された管継手では、冷媒管を管継手に接続する場合、先ず、冷媒を流すための冷媒管の端部を、フレア加工ツールによって拡径して、フレア部（拡径部）を形成する。そして、このフレア部を、管継手の管継手本体とフレアナットとで挟み込むことで、管継手は冷媒管に接続される。このように接続された管継手は、冷媒管のフレア部と、管継手本体とが接触することによってシールされる。このため、フレア部と管継手本体とのシール部分に、傷等の凹凸があると、管継手のシール能力が低下する。   In the pipe joint disclosed in Patent Document 1, when connecting the refrigerant pipe to the pipe joint, first, the end of the refrigerant pipe for flowing the refrigerant is enlarged by a flare processing tool, and a flare portion (expanded portion) is obtained. ). And a pipe joint is connected to a refrigerant pipe by pinching | interposing this flare part with the pipe joint main body and flare nut of a pipe joint. The pipe joint thus connected is sealed by the flare portion of the refrigerant pipe and the pipe joint main body coming into contact with each other. For this reason, if the sealing part between the flare part and the pipe joint body has irregularities such as scratches, the sealing ability of the pipe joint is reduced.

本発明は、上述の事情の下になされたもので、シール能力の高い管継手、空気調和機、接続管、及び接続方法を提供することを目的とする。 The present invention has been made under the above circumstances, and an object thereof is to provide high sealing ability pipe fitting, air conditioner, connecting tube, the 及 beauty connection method.

上述の目的を達成するために、本発明の管継手は、流体が流れる接続管が接続される管継手であって、管継手本体とナット部材とを有する。管継手本体には、外周面に雄ネジ部が形成されるとともに、前記接続管が挿入され、前記接続管と接合するための第１接合面を有する第１挿入孔が形成されている。ナット部材には、前記雄ネジ部が螺合される雌ネジ部と、前記接続管が挿入され、前記接続管と接合するための第２接合面とを有する第２挿入孔が形成されている。前記管継手本体の前記第１挿入孔と、前記ナット部材の前記第２挿入孔とのいずれか一方には、前記管継手本体の軸に平行なストレート孔面を有している。この管継手に、径方向に膨らんだ膨出部が、端部に形成された前記接続管が接続された場合、前記管継手本体の前記雄ネジ部が、前記ナット部材の前記雌ネジ部に螺合されることにより、前記膨出部が、前記第１接合面と前記第２接合面とに挟まれる。そして、前記膨出部と前記第１接合面との接合部分が、前記流体の漏洩を防止する第１シール部を形成するとともに、前記膨出部と前記第２接合面との接合部分が、前記流体の漏洩を防止する第２シール部を形成する。また、前記管継手本体の端面が、前記ナット部材の前記第２挿入孔の内周面の一部に接合し、前記流体の漏洩を防止する第３シール部が形成される。前記膨出部は、前記第１接合面と前記第２接合面とに挟まれて、径方向に拡径することで、前記ストレート孔面に接合し、前記流体の漏洩を防止する第４シール部が形成される。 In order to achieve the above object, a pipe joint of the present invention is a pipe joint to which a connecting pipe through which a fluid flows is connected, and includes a pipe joint body and a nut member. The pipe joint body has a male screw portion formed on the outer peripheral surface, and a first insertion hole having a first joint surface into which the connection pipe is inserted and joined to the connection pipe. The nut member is formed with a second insertion hole having a female screw part into which the male screw part is screwed, and a second joint surface into which the connection pipe is inserted and joined to the connection pipe. . One of the first insertion hole of the pipe joint body and the second insertion hole of the nut member has a straight hole surface parallel to the axis of the pipe joint body. The tube fitting, bulging radially bulging part, when the connecting tube formed on the end portion is connected, the male threaded portion of the fitting body, the female screw portion of the nut member By screwing, the bulging portion is sandwiched between the first joint surface and the second joint surface. And the joint part between the bulging part and the first joint surface forms a first seal part for preventing leakage of the fluid , and the joint part between the bulge part and the second joint surface is: A second seal part for preventing leakage of the fluid is formed. Further, the end surface of the pipe joint main body is joined to a part of the inner peripheral surface of the second insertion hole of the nut member, and a third seal portion for preventing leakage of the fluid is formed. The bulging portion is sandwiched between the first joint surface and the second joint surface, and is expanded in the radial direction so as to join the straight hole surface and prevent leakage of the fluid. Part is formed.

本発明によれば、径方向に膨らんだ膨出部が、端部に形成された接続管が接続されると、第１シール部、第２シール部、第３シール部の３つのシール部が形成される。このため、シール能力の高い管継手、空気調和機、接続管、及び接続方法を提供することができる。 According to the present invention, when the connecting portion formed at the end portion of the bulging portion swelled in the radial direction is connected, the three sealing portions of the first sealing portion, the second sealing portion, and the third sealing portion are It is formed. Therefore, it is possible to provide high sealing ability pipe fitting, air conditioner, connecting tube, the 及 beauty connection method.

本発明の実施の形態１に係る空気調和機の模式図である。It is a schematic diagram of the air conditioner according to Embodiment 1 of the present invention. 本発明の実施の形態に係る管継手の一部断面図である。It is a partial sectional view of a pipe joint concerning an embodiment of the invention. 図２の一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of FIG. 管継手を分解して示した一部断面図である。It is the partial sectional view which exploded and showed the pipe joint. 接続管の製造方法を示した断面図（その１）である。It is sectional drawing (the 1) which showed the manufacturing method of the connecting pipe. 接続管の製造方法を示した断面図（その２）である。It is sectional drawing (the 2) which showed the manufacturing method of the connecting pipe. 接続管の製造方法を示した断面図（その３）である。It is sectional drawing (the 3) which showed the manufacturing method of a connecting pipe. 管継手と接続管との接続を説明するための断面図である。It is sectional drawing for demonstrating the connection of a pipe joint and a connection pipe. 膨出部の形状が異なる接続管が接続された管継手の断面図である。It is sectional drawing of the pipe joint with which the connection pipe from which the shape of a bulging part differs was connected. 図９Ａを部分的に拡大した断面図である。It is sectional drawing to which FIG. 9A was expanded partially. 本発明の実施の形態２に係る管継手の断面図である。It is sectional drawing of the pipe joint which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る管継手の断面図である。It is sectional drawing of the pipe joint which concerns on Embodiment 3 of this invention. 図１１Ａを部分的に拡大した断面図である。FIG. 11B is a partially enlarged cross-sectional view of FIG. 11A. 本発明の実施の形態４に係る管継手の断面図である。It is sectional drawing of the pipe joint which concerns on Embodiment 4 of this invention. 図１２Ａを部分的に拡大した断面図である。It is sectional drawing which expanded FIG. 12A partially.

実施の形態１．
以下、本発明の実施の形態１に係る管継手１０及び空気調和機１００について、図１〜図８を用いて説明する。なお、理解を容易にするため、ＸＹＺ座標を設定し、適宜参照する。Embodiment 1 FIG.
Hereinafter, the pipe joint 10 and the air conditioner 100 according to Embodiment 1 of the present invention will be described with reference to FIGS. In order to facilitate understanding, XYZ coordinates are set and referred to as appropriate.

本発明の実施の形態１に係る空気調和機１００は、空調対象の室内の温度調節のために用いられる。空気調和機１００は、図１に示すように、室内機１０２と、室外機１０３と、室内機１０２と室外機１０３とを接続する複数の接続管１０１と、を有する。接続管１０１は、冷凍サイクルを構成する冷媒が流れる管である。冷媒には、例えば、ジフルオロメタン（ＣＨ２Ｆ２）からなるＲ３２が用いられる。室内機１０２は、空調対象の室内に設置され、室内の空気と熱交換を行う。室外機１０３は、室外に設置され、室外の空気と熱交換を行う。また、接続管１０１それぞれには、閉止弁１０４が設けられている。閉止弁１０４は、接続管１０１の冷媒の流れを閉じたり、開いたりする。The air conditioner 100 according to Embodiment 1 of the present invention is used for adjusting the temperature of a room to be air-conditioned. As shown in FIG. 1, the air conditioner 100 includes an indoor unit 102, an outdoor unit 103, and a plurality of connection pipes 101 that connect the indoor unit 102 and the outdoor unit 103. The connecting pipe 101 is a pipe through which the refrigerant constituting the refrigeration cycle flows. For example, R32 made of difluoromethane (CH 2 F 2 ) is used as the refrigerant. The indoor unit 102 is installed in a room to be air-conditioned and exchanges heat with indoor air. The outdoor unit 103 is installed outside and performs heat exchange with outdoor air. Each connection pipe 101 is provided with a stop valve 104. The stop valve 104 closes or opens the refrigerant flow in the connection pipe 101.

管継手１０は、接続管１０１と、室内機１０２の接続口１０２ａとの接続に用いられる。管継手１０は、図２及び図３に示すように、管継手本体２０と、ナット部材３０とを有する。なお、図中、Ｚ軸方向が、管継手本体２０及び接続管１０１の軸方向に相当する。   The pipe joint 10 is used for connection between the connection pipe 101 and the connection port 102a of the indoor unit 102. As shown in FIGS. 2 and 3, the pipe joint 10 includes a pipe joint body 20 and a nut member 30. In the drawing, the Z-axis direction corresponds to the axial direction of the pipe joint body 20 and the connecting pipe 101.

管継手本体２０は、外周面に雄ネジ部２５が形成された略円筒状の部材である。管継手本体２０は、例えば、ステンレス、鋼、アルミ合金等の金属又は樹脂から形成される。この管継手本体２０には、図４に示すように、挿入孔２１（第１挿入孔）が形成されている。挿入孔２１には、＋Ｚ側から、接続管１０１が挿入されることで、冷凍サイクルの冷媒が流れる通路となる。また、挿入孔２１の内周面には、テーパ面２２（第１接合面）が形成されている。テーパ面２２は、Ｚ軸方向（接続管１０１の軸方向）に対して傾斜するように形成されている。テーパ面２２の傾斜角度θ１は、例えば、４５°である。また、挿入孔２１の＋Ｚ側の開口には、ストレート孔面２３が形成されている。このストレート孔面２３は、Ｚ軸方向（接続管１０１の軸方向）に平行に形成されている。また、管継手本体２０の＋Ｚ側の端部には、図３に示すように、室内機１０２の接続口１０２ａが接続されている。接続口１０２ａは、例えば、ロウ付けによって接続される。   The pipe joint body 20 is a substantially cylindrical member having a male screw portion 25 formed on the outer peripheral surface. The pipe joint main body 20 is formed from metals or resins, such as stainless steel, steel, an aluminum alloy, for example. As shown in FIG. 4, an insertion hole 21 (first insertion hole) is formed in the pipe joint body 20. By inserting the connecting pipe 101 into the insertion hole 21 from the + Z side, it becomes a passage through which the refrigerant of the refrigeration cycle flows. Further, a tapered surface 22 (first bonding surface) is formed on the inner peripheral surface of the insertion hole 21. The tapered surface 22 is formed so as to be inclined with respect to the Z-axis direction (the axial direction of the connecting pipe 101). The inclination angle θ1 of the tapered surface 22 is 45 °, for example. A straight hole surface 23 is formed in the + Z side opening of the insertion hole 21. The straight hole surface 23 is formed in parallel to the Z-axis direction (the axial direction of the connecting pipe 101). Moreover, as shown in FIG. 3, the connection port 102a of the indoor unit 102 is connected to the end of the pipe joint body 20 on the + Z side. The connection port 102a is connected by brazing, for example.

ナット部材３０は、図４に示すように、六角ナットから構成されている。ナット部材３０は、例えば、ステンレス、鋼、黄銅、アルミ合金等の金属又は樹脂から形成される。このナット部材３０には、Ｚ軸方向に貫通する挿入孔３１（第２挿入孔）が形成されている。この挿入孔３１には、接続管１０１の膨出部１０１ａが形成されていない部分が挿入される。また、挿入孔３１の内周面は、接続管１０１を径方向の位置に保持する保持面３２と、管継手本体２０の雄ネジ部２５と螺合する雌ネジ部３３と、保持面３２と雌ネジ部３３との間に形成されたテーパ面３４（第２接合面）とが形成されている。テーパ面３４は、Ｚ軸方向（接続管１０１の軸方向）に対して傾斜して形成されている。また、テーパ面３４は、管継手本体２０のテーパ面２２に対向するように形成され、テーパ面２２とともに、接続管１０１の膨出部１０１ａを挟み込む。このテーパ面３４の傾斜角度θ２は、例えば、４５°である。なお、本実施形態においては、ナット部材３０は、ＪＩＳ Ｂ ８６０７に準拠した形状である。ただし、これに限らず、ナット部材３０は、ＪＩＳに準拠した形状でなくともよい。   As shown in FIG. 4, the nut member 30 is composed of a hex nut. The nut member 30 is made of, for example, a metal such as stainless steel, steel, brass, aluminum alloy, or a resin. The nut member 30 has an insertion hole 31 (second insertion hole) penetrating in the Z-axis direction. A portion of the connecting pipe 101 where the bulging portion 101 a is not formed is inserted into the insertion hole 31. Further, the inner peripheral surface of the insertion hole 31 includes a holding surface 32 that holds the connecting pipe 101 in a radial position, a female screw portion 33 that is screwed with the male screw portion 25 of the pipe joint body 20, and a holding surface 32. A tapered surface 34 (second bonding surface) formed between the female screw portion 33 is formed. The tapered surface 34 is formed to be inclined with respect to the Z-axis direction (the axial direction of the connecting pipe 101). The tapered surface 34 is formed so as to face the tapered surface 22 of the pipe joint main body 20, and sandwiches the bulging portion 101 a of the connecting pipe 101 together with the tapered surface 22. The inclination angle θ2 of the tapered surface 34 is, for example, 45 °. In the present embodiment, the nut member 30 has a shape conforming to JIS B 8607. However, the present invention is not limited thereto, and the nut member 30 may not have a shape conforming to JIS.

また、管継手本体２０の端面には、Ｚ軸方向に対して傾斜するテーパ面２４（第３接合面）が形成されている。テーパ面２４は、ナット部材３０の挿入孔３１のテーパ面３４に平行に形成され、管継手本体２０の雄ネジ部２５が、ナット部材３０の雌ネジ部３３に螺合されると、ナット部材３０のテーパ面３４に接合する。本実施の形態１においては、テーパ面２４の傾斜角度θ３は、例えば、テーパ面３４の傾斜角度θ２の角度にあわせて、４５°である。   A tapered surface 24 (third joint surface) that is inclined with respect to the Z-axis direction is formed on the end surface of the pipe joint body 20. The tapered surface 24 is formed in parallel with the tapered surface 34 of the insertion hole 31 of the nut member 30, and when the male screw portion 25 of the pipe joint body 20 is screwed to the female screw portion 33 of the nut member 30, the nut member Joined to 30 tapered surfaces 34. In the first embodiment, the inclination angle θ3 of the taper surface 24 is, for example, 45 ° in accordance with the angle of the inclination angle θ2 of the taper surface 34.

図１に示す接続管１０１は、空気調和機１００の室内機１０２と室外機１０３との間を流れる冷媒の通路となる管である。接続管１０１は、例えば、金属管（銅管）である。接続管１０１は、図４に示すように、接続管本体１０１ｂと、膨出部１０１ａとを有する。膨出部１０１ａは、接続管本体１０１ｂの−Ｚ側の端部に、風船状に膨らむように形成されている。膨出部１０１ａは、接続管本体１０１ｂから径方向に拡がる拡径部１０１ｃと、拡径部１０１ｃから径方向に狭まる縮径部１０１ｄとを有する。なお、本実施の形態１では、膨出部１０１ａは、接続管本体１０１ｂの−Ｚ側の端部に形成されている。しかしながら、これに限らず、接続管本体１０１ｂの少なくとも一部に形成されていればよい。   A connecting pipe 101 shown in FIG. 1 is a pipe serving as a passage for a refrigerant flowing between the indoor unit 102 and the outdoor unit 103 of the air conditioner 100. The connection pipe 101 is, for example, a metal pipe (copper pipe). As shown in FIG. 4, the connection pipe 101 has a connection pipe main body 101b and a bulging portion 101a. The bulging part 101a is formed at the end of the connecting pipe main body 101b on the −Z side so as to swell in a balloon shape. The bulging portion 101a has a diameter-expanded portion 101c that expands in the radial direction from the connecting pipe main body 101b and a diameter-reduced portion 101d that narrows in the radial direction from the diameter-expanded portion 101c. In the first embodiment, the bulging portion 101a is formed at the −Z side end of the connecting pipe main body 101b. However, the present invention is not limited to this, and it may be formed at least at a part of the connecting pipe main body 101b.

接続管１０１の膨出部１０１ａは、例えば、図５に示すように、既存のフレア加工ツール（拡径部材）５０を用いて形成される。フレア加工ツール５０は、例えば、接続管１０１を固定するフレアダイス（固定部材）５１と、接続管１０１の端部開口を拡径するフレアコーン（回転押圧部材）５２とから構成される。接続管１０１の膨出部１０１ａを形成する場合、先ず、膨出部１０１ａが形成されていない管部材１１０を用意する。この管部材１１０には、上述したナット部材３０を、あらかじめ、嵌め込んでおく。次に、管部材１１０を、フレアダイス５１に固定する。詳しくは、このフレアダイス５１の貫通孔５１ａに、管部材１１０を挿入した上で、クランプ装置等により、径方向に締め付けて、管部材１１０をフレアダイス５１に固定する。なお、このフレアダイス５１は、管部材１１０の−Ｚ側の端部から所定の距離Ｌ（頭出し寸法）の位置に配置される。また、フレアダイス５１の貫通孔５１ａの−Ｚ側の開口の縁には、テーパ面５１ｂが形成されている。このテーパ面５１ｂの傾斜角度θ４は、例えば、テーパ面３４の傾斜角度θ２の角度にあわせて、４５°である。   For example, as shown in FIG. 5, the bulging portion 101 a of the connecting pipe 101 is formed using an existing flare processing tool (diameter expanding member) 50. The flare processing tool 50 includes, for example, a flare die (fixing member) 51 that fixes the connection pipe 101 and a flare cone (rotary pressing member) 52 that expands the end opening of the connection pipe 101. When forming the bulging part 101a of the connecting pipe 101, first, the pipe member 110 in which the bulging part 101a is not formed is prepared. The nut member 30 described above is fitted into the tube member 110 in advance. Next, the pipe member 110 is fixed to the flare die 51. Specifically, the tube member 110 is inserted into the through-hole 51a of the flare die 51, and then tightened in the radial direction by a clamp device or the like to fix the tube member 110 to the flare die 51. The flare die 51 is disposed at a predetermined distance L (cueing dimension) from the −Z side end of the pipe member 110. A tapered surface 51 b is formed at the edge of the opening on the −Z side of the through hole 51 a of the flare die 51. The inclination angle θ4 of the taper surface 51b is, for example, 45 ° in accordance with the inclination angle θ2 of the taper surface 34.

次に、管部材１１０に、アダプター６０を嵌め込む。アダプター６０は、フランジ部６１が形成された略円柱形状の部材であり、管部材１１０の−Ｚ側から嵌め込まれる。フランジ部６１の＋Ｚ側の面には、管部材１１０の−Ｚ側の端部が当接する。   Next, the adapter 60 is fitted into the pipe member 110. The adapter 60 is a substantially cylindrical member in which the flange portion 61 is formed, and is fitted from the −Z side of the tube member 110. The −Z side end portion of the tube member 110 abuts on the + Z side surface of the flange portion 61.

続いて、図６に示すように、フレア加工ツール５０のフレアコーン５２を、Ｚ軸回りに回転させつつ、＋Ｚ方向に移動させる。フレアコーン５２は、アダプター６０に対して滑りながら回転する。フレアコーン５２を＋Ｚ方向に移動させることにより、アダプター６０が、管部材１１０の−Ｚ側の端部を、Ｚ軸方向に圧縮する。圧縮された管部材１１０の端部は、拡径されるとともに、フレアダイス５１のテーパ面５１ｂに拘束されつつ、風船状に膨らむように変形する。この結果、図７に示すように、膨出部１０１ａが形成された接続管１０１が完成する。   Subsequently, as shown in FIG. 6, the flare cone 52 of the flare processing tool 50 is moved in the + Z direction while rotating around the Z axis. The flare cone 52 rotates while sliding with respect to the adapter 60. By moving the flare cone 52 in the + Z direction, the adapter 60 compresses the −Z side end of the tube member 110 in the Z-axis direction. The compressed end of the pipe member 110 is expanded and deformed so as to swell in a balloon shape while being constrained by the tapered surface 51 b of the flare die 51. As a result, as shown in FIG. 7, the connecting pipe 101 in which the bulging portion 101a is formed is completed.

上述のように形成された膨出部１０１ａは、図８に示すように、管継手本体２０にナット部材３０が螺合されることで、管継手本体２０の挿入孔２１のテーパ面２２と、ナット部材３０の挿入孔３１のテーパ面３４とに、Ｚ軸方向（接続管１０１の軸方向）に挟まれて固定される。膨出部１０１ａが、Ｚ軸方向に圧縮されつつ、テーパ面２２に当接することで、シール部Ｓ１（第１シール部）が形成される。同様に、膨出部１０１ａが、Ｚ軸方向に圧縮されつつ、テーパ面３４に当接することで、シール部Ｓ２（第２シール部）が形成される。また、膨出部１０１ａが、対向するテーパ面２２，３４に挟まれることで、径方向に少し拡径し、ストレート孔面２３にも当接する。膨出部１０１ａが、ストレート孔面２３にも当接することで、シール部Ｓ４（第４シール部）が形成される。   As shown in FIG. 8, the bulging portion 101 a formed as described above has a tapered surface 22 of the insertion hole 21 of the pipe joint body 20 by screwing the nut member 30 into the pipe joint body 20. The nut member 30 is fixed to the tapered surface 34 of the insertion hole 31 of the nut member 30 by being sandwiched in the Z-axis direction (the axial direction of the connecting pipe 101). The bulging portion 101a abuts on the tapered surface 22 while being compressed in the Z-axis direction, whereby the seal portion S1 (first seal portion) is formed. Similarly, the bulging portion 101a is compressed in the Z-axis direction and abuts against the tapered surface 34, whereby the seal portion S2 (second seal portion) is formed. Further, the bulging portion 101 a is sandwiched between the opposing tapered surfaces 22 and 34, so that the diameter is slightly increased in the radial direction, and also comes into contact with the straight hole surface 23. The bulging part 101a also contacts the straight hole surface 23, whereby a seal part S4 (fourth seal part) is formed.

また、管継手本体２０にナット部材３０が螺合されることで、ナット部材３０の挿入孔３１のテーパ面３４が、管継手本体２０の端面のテーパ面２４に接合される。これにより、シール部Ｓ３（第３シール部、メタルシール部）が形成される。したがって、接続管１０１が接続された管継手１０は、４箇所のシール部（シール部Ｓ１，Ｓ２，Ｓ３，Ｓ４）においてシールされる。   Further, the nut member 30 is screwed into the pipe joint main body 20, whereby the tapered surface 34 of the insertion hole 31 of the nut member 30 is joined to the tapered surface 24 of the end face of the pipe joint main body 20. As a result, a seal portion S3 (third seal portion, metal seal portion) is formed. Therefore, the pipe joint 10 to which the connection pipe 101 is connected is sealed at the four seal parts (seal parts S1, S2, S3, S4).

以上、説明したように、本実施の形態１によれば、接続管１０１の膨出部１０１ａが、管継手本体２０のテーパ面２２と、ナット部材３０のテーパ面３４とに挟まれるとともに、ストレート孔面２３に当接することで、シール部Ｓ１，Ｓ２，Ｓ４が形成される。また、ナット部材３０のテーパ面３４が、管継手本体２０のテーパ面２４に接合されることで、シール部Ｓ３が形成される。このため、シール能力の高い管継手、空気調和機、及び管継手に接続される接続管の製造方法を提供することができる。   As described above, according to the first embodiment, the bulging portion 101a of the connecting pipe 101 is sandwiched between the tapered surface 22 of the pipe joint main body 20 and the tapered surface 34 of the nut member 30, and is straight. By contacting the hole surface 23, seal portions S1, S2, S4 are formed. Further, the taper surface 34 of the nut member 30 is joined to the taper surface 24 of the pipe joint main body 20, thereby forming the seal portion S <b> 3. For this reason, the manufacturing method of the pipe joint with high sealing capability, an air conditioner, and the connection pipe connected to a pipe joint can be provided.

本実施の形態１において、冷媒の漏洩経路を考えた場合、図８を参照するとわかるように、２つの漏洩経路Ｅ１、Ｅ２が考えられる。詳しくは、漏洩経路Ｅ１は、冷媒が、接続管１０１の膨出部１０１ａの外周に沿って移動して、ナット部材３０の保持面３２から漏洩する経路である。漏洩経路Ｅ２は、冷媒が、接続管１０１の膨出部１０１ａの外周に沿って移動して、雄ネジ部２５と雌ネジ部３３との螺合部分から漏洩する経路である。冷媒が、漏洩経路Ｅ１を通って漏洩する場合、冷媒は、シール部Ｓ１、シール部Ｓ４、シール部Ｓ２の３箇所を通過する。一方、冷媒が、漏洩経路Ｅ２を通って漏洩する場合、冷媒は、シール部Ｓ１、シール部Ｓ４、シール部Ｓ３の３箇所を通過する。このため、これらのシール部Ｓ１〜Ｓ４のうちのいずれか一つに、傷等の凹凸に起因した冷媒の漏洩があってとしても、残りのシール部Ｓ１〜Ｓ４においてシールされているため、冷媒が、管継手１０の外部へ漏洩することを防ぐことができる。   In the first embodiment, when considering the refrigerant leakage path, two leakage paths E1 and E2 are conceivable as can be seen with reference to FIG. Specifically, the leakage path E <b> 1 is a path through which the refrigerant moves along the outer periphery of the bulging portion 101 a of the connection pipe 101 and leaks from the holding surface 32 of the nut member 30. The leakage path E <b> 2 is a path through which the refrigerant moves along the outer periphery of the bulging portion 101 a of the connection pipe 101 and leaks from the screwed portion between the male screw portion 25 and the female screw portion 33. When the refrigerant leaks through the leakage path E1, the refrigerant passes through the three portions of the seal portion S1, the seal portion S4, and the seal portion S2. On the other hand, when the refrigerant leaks through the leakage path E2, the refrigerant passes through the three portions of the seal portion S1, the seal portion S4, and the seal portion S3. For this reason, even if any one of these seal portions S1 to S4 has leakage of the refrigerant due to irregularities such as scratches, it is sealed in the remaining seal portions S1 to S4. However, it can prevent leaking outside the pipe joint 10.

これに対して、管のフレア部を、管継手本体とナット部材とで挟み込む従来の管継手の場合、シール部が一つのみである。このため、フレア部と管継手本体とのシール部分に、傷等の凹凸があると、管継手のシール能力が低下し、冷媒が漏洩する。   On the other hand, in the case of the conventional pipe joint which pinches | interposes the flare part of a pipe | tube with a pipe joint main body and a nut member, there is only one seal part. For this reason, if there are irregularities such as scratches in the seal portion between the flare portion and the pipe joint main body, the seal capability of the pipe joint is reduced and the refrigerant leaks.

しかしながら、本実施の形態１に係る管継手１０の場合、４つのシール部Ｓ１〜Ｓ４でシールされているため、いずれかのシール部分に傷等の凹凸があったとしても、冷媒が、管継手１０の外部に漏洩することを好適に防ぐことができる。   However, in the case of the pipe joint 10 according to the first embodiment, since it is sealed with the four seal portions S1 to S4, even if there are irregularities such as scratches in any of the seal portions, the refrigerant is pipe joint. 10 can be suitably prevented from leaking outside.

また、本実施の形態１に係る管継手１０は、管継手本体２０とナット部材３０とから構成されているため、シール能力を高めるために、管継手本体２０とナット部材３０との間に配置させるフロントフェルール及びバックフェルール等の部品を、別途使用する必要もない。このため、部品点数の増加によって、製造コストが高くなることもない。   Moreover, since the pipe joint 10 according to the first embodiment includes the pipe joint main body 20 and the nut member 30, the pipe joint 10 is disposed between the pipe joint main body 20 and the nut member 30 in order to increase the sealing capability. There is no need to separately use parts such as a front ferrule and a back ferrule. For this reason, the manufacturing cost does not increase due to the increase in the number of parts.

また、本実施の形態１に係る管継手１０に接続される接続管１０１は、管部材１１０にアダプター６０を嵌め込んだ上で、既存のフレア加工ツール（拡径部材）５０を用いて形成される。このため、ユーザのフレア加工の熟練度に関わらず、容易に、膨出部１０１ａが形成された接続管１０１を容易に得ることができる。また、形成された接続管１０１の加工精度のばらつきを抑えることができる。   The connecting pipe 101 connected to the pipe joint 10 according to the first embodiment is formed by using the existing flare processing tool (diameter expanding member) 50 after fitting the adapter 60 into the pipe member 110. The For this reason, it is possible to easily obtain the connecting pipe 101 in which the bulging portion 101a is formed regardless of the skill level of the user's flare processing. In addition, variations in processing accuracy of the formed connecting pipe 101 can be suppressed.

また、図９Ａ及び図９Ｂに示すように、膨出部１０１ａの−Ｚ側の端部が、内向きに形成されていた場合等、膨出部の形状に多少のばらつきがあったとしても、本実施の形態１に係る管継手１０に、容易に接続することができる。   Further, as shown in FIGS. 9A and 9B, even when the −Z side end of the bulging portion 101a is formed inward, even if there is some variation in the shape of the bulging portion, It can be easily connected to the pipe joint 10 according to the first embodiment.

以上、本発明の実施の形態１について説明したが、本発明は上記実施の形態１によって限定されるものではない。   Although the first embodiment of the present invention has been described above, the present invention is not limited to the first embodiment.

例えば、実施の形態１では、管継手本体２０の挿入孔２１のテーパ面２２の傾斜角度θ１を、４５°として例示した。しかしながら、これに限らず、傾斜角度θ１は、４５°とは異なる傾斜角度であってもよい。ただし、接続管１０１の膨出部１０１ａの形成のしやすさの観点から、傾斜角度θ１の好ましい角度の範囲は、４３°〜４７°であり、さらに好ましくは、本実施の形態で示した通り、４５°である。   For example, in Embodiment 1, the inclination angle θ1 of the tapered surface 22 of the insertion hole 21 of the pipe joint body 20 is exemplified as 45 °. However, the present invention is not limited to this, and the inclination angle θ1 may be an inclination angle different from 45 °. However, from the viewpoint of easy formation of the bulging portion 101a of the connection pipe 101, the preferable angle range of the inclination angle θ1 is 43 ° to 47 °, and more preferably as shown in the present embodiment. 45 °.

また、実施の形態１では、ナット部材３０の挿入孔３１のテーパ面３４の傾斜角度θ２を、４５°として例示した。しかしながら、これに限らず、傾斜角度θ２は、４５°とは異なる傾斜角度であってもよい。ただし、接続管１０１の膨出部１０１ａの形成のしやすさの観点から、傾斜角度θ２の好ましい角度の範囲は、４３°〜４７°であり、さらに好ましくは、本実施の形態で示した通り、４５°である。   In the first embodiment, the inclination angle θ2 of the tapered surface 34 of the insertion hole 31 of the nut member 30 is exemplified as 45 °. However, the present invention is not limited to this, and the inclination angle θ2 may be an inclination angle different from 45 °. However, from the viewpoint of ease of formation of the bulging portion 101a of the connecting pipe 101, the preferable angle range of the inclination angle θ2 is 43 ° to 47 °, and more preferably as shown in the present embodiment. 45 °.

また、実施の形態１では、管継手本体２０の端面に形成されたテーパ面２４の傾斜角度θ３を、４５°として例示した。しかしながら、これに限らず、傾斜角度θ３は、４５°とは異なる傾斜角度であってもよい。ただし、ナット部材３０の挿入孔３１のテーパ面３４の傾斜角度θ２と同等が好ましい。   In the first embodiment, the inclination angle θ3 of the tapered surface 24 formed on the end surface of the pipe joint body 20 is exemplified as 45 °. However, the present invention is not limited to this, and the inclination angle θ3 may be an inclination angle different from 45 °. However, the inclination angle θ2 of the tapered surface 34 of the insertion hole 31 of the nut member 30 is preferably equal to that.

実施の形態２．
また、図１０に示すように、膨出部１０１ａが形成された接続管１０１に代えて、フレア部２０１ａ（拡径部）が形成された接続管２０１を、本実施の形態の管継手１０に接続することも可能である。この場合、フレア部２０１ａが、ナット部材３０の挿入孔２１に形成されたテーパ面２４と、管継手本体２０の外周面に形成されたテーパ面３４とに挟まれることで、接続管２０１は、管継手１０に接続される。したがって、既にフレア部２０１ａが形成された接続管２０１に接続されている既存の管継手から、本実施の形態に係る管継手１０に互換することができる。また、接続管に接続されている管継手を交換する際に、ユーザは、本実施の形態に係る管継手１０と、既存の管継手とを、適宜、選択することができる。Embodiment 2. FIG.
In addition, as shown in FIG. 10, instead of the connecting pipe 101 in which the bulging part 101 a is formed, a connecting pipe 201 in which a flare part 201 a (expanded diameter part) is formed is used as the pipe joint 10 of the present embodiment. It is also possible to connect. In this case, the flare portion 201a is sandwiched between the tapered surface 24 formed in the insertion hole 21 of the nut member 30 and the tapered surface 34 formed on the outer peripheral surface of the pipe joint body 20, so that the connecting pipe 201 is Connected to the pipe joint 10. Therefore, the existing pipe joint that is already connected to the connection pipe 201 in which the flare 201a is already formed can be compatible with the pipe joint 10 according to the present embodiment. Moreover, when exchanging the pipe joint connected to the connection pipe, the user can appropriately select the pipe joint 10 according to the present embodiment and the existing pipe joint.

実施の形態３．
また、上記実施の形態１では、管継手本体２０が、シール部Ｓ４を形成するためのストレート孔面２３を有している。しかしながら、これに限らず、図１１Ａ及び図１１Ｂに示す実施の形態３に係る管継手１０Ａのように、ストレート孔面２３を有さなくともよい。この場合でも、３つのシール部Ｓ１，Ｓ２，Ｓ３でシールされることで、冷媒が、管継手１０の外部に漏洩することを好適に防ぐことができる。ただし、上記実施の形態１に係る管継手１０の場合（ストレート孔面２３を有する場合）は、４つのシール部Ｓ１，Ｓ２，Ｓ３，Ｓ４でシールされるため、シール能力の観点からは、ストレート孔面２３を有する方が好ましい。Embodiment 3 FIG.
Moreover, in the said Embodiment 1, the pipe joint main body 20 has the straight hole surface 23 for forming seal part S4. However, the present invention is not limited to this, and the straight hole surface 23 may not be provided like the pipe joint 10A according to Embodiment 3 shown in FIGS. 11A and 11B. Even in this case, it is possible to suitably prevent the refrigerant from leaking to the outside of the pipe joint 10 by being sealed by the three seal portions S1, S2, and S3. However, in the case of the pipe joint 10 according to the first embodiment (when the straight hole surface 23 is provided), since it is sealed by the four seal portions S1, S2, S3, and S4, from the viewpoint of the sealing capability, the straight It is preferable to have a hole surface 23.

実施の形態４．
また、実施の形態１では、シール部Ｓ４を形成するためのストレート孔面２３を、管継手本体２０が有している。しかしながら、これに限らず、図１２Ａ及び図１２Ｂに示す実施の形態３に係る管継手１０Ｂのように、ストレート孔面３５を、ナット部材３０が有していてもよい。この場合、接続管１０１の膨出部１０１ａが、管継手本体２０のテーパ面２２と、ナット部材３０のテーパ面３４とに挟まれるとともに、ナット部材３０のストレート孔面３５の内周面に当接することで、シール部Ｓ１，Ｓ２，Ｓ４が形成される。また、ナット部材３０のテーパ面３６が、管継手本体２０のテーパ面２２に接合されることで、シール部Ｓ３（メタルシール部）が形成される。Embodiment 4 FIG.
Moreover, in Embodiment 1, the pipe joint main body 20 has the straight hole surface 23 for forming seal part S4. However, the present invention is not limited to this, and the nut member 30 may have the straight hole surface 35 as in the pipe joint 10B according to Embodiment 3 shown in FIGS. 12A and 12B. In this case, the bulging portion 101 a of the connecting pipe 101 is sandwiched between the tapered surface 22 of the pipe joint body 20 and the tapered surface 34 of the nut member 30, and contacts the inner peripheral surface of the straight hole surface 35 of the nut member 30. By contact, seal portions S1, S2, and S4 are formed. Moreover, the taper surface 36 of the nut member 30 is joined to the taper surface 22 of the pipe joint main body 20, thereby forming a seal portion S <b> 3 (metal seal portion).

また、本実施の形態１〜４では、冷凍サイクルの冷媒に、ジフルオロメタン（ＣＨ２Ｆ２）からなるＲ３２を用いた例が示されている。しかしながら、これに限らず、冷媒は、ＨＦＯ１２３４ｙｆ（ハイドロフルオロオレフィン）であってもよいし、Ｒ３２と、ＨＦＯ１２３４ｙｆとの混合冷媒であってもよい。また、Ｒ３２やＨＦＯ１２３４ｙｆなどは、地球温暖化の対策のために、従来の冷媒（例えば、Ｒ２２、Ｒ４１０Ａなど）に代わる代替フロンとして用いられているが、従来の冷媒とは異なり、可燃性を有する場合が多い。本実施の形態の管継手１０では、上述したように、シール能力が高いため、可燃性を有する代替フロンを用いた場合においても、空気調和機１００を安全に使用することができる。Further, in the fourth embodiment, the refrigerant of the refrigeration cycle, an example of using the R32 consisting of difluoromethane (CH 2 F 2) is shown. However, the present invention is not limited to this, and the refrigerant may be HFO1234yf (hydrofluoroolefin) or a mixed refrigerant of R32 and HFO1234yf. In addition, R32, HFO1234yf, and the like are used as alternative chlorofluorocarbons to replace conventional refrigerants (for example, R22, R410A, etc.) for measures against global warming. However, unlike conventional refrigerants, they are flammable. There are many cases. In the pipe joint 10 of the present embodiment, as described above, since the sealing ability is high, the air conditioner 100 can be used safely even when an alternative chlorofluorocarbon is used.

また、本実施の形態１〜４では、管継手１０は、接続管１０１と、空気調和機１００の室内機１０２の接続口１０２ａとの接続に用いられるが、これに限らず、接続管１０１と、室外機１０３の接続口との接続に用いられていてもよい。   Moreover, in this Embodiment 1-4, although the pipe joint 10 is used for the connection of the connection pipe 101 and the connection port 102a of the indoor unit 102 of the air conditioner 100, it is not restricted to this, The connection pipe 101 and It may be used for connection with the connection port of the outdoor unit 103.

また、本実施の形態１〜４では、管継手１０は、空気調和機１００の冷媒を搬送する接続管１０１に用いられているが、これに限らず、液体やガスを搬送する管であれば、空気調和機１００の接続管１０１以外のものにも適用可能である。   Moreover, in this Embodiment 1-4, although the pipe joint 10 is used for the connection pipe 101 which conveys the refrigerant | coolant of the air conditioner 100, it will not be restricted to this, If it is a pipe | tube which conveys a liquid and gas. The present invention is also applicable to other than the connection pipe 101 of the air conditioner 100.

本発明は、本発明の広義の精神と範囲を逸脱することなく、様々な実施の形態及び変形が可能とされるものである。上述した実施の形態は、本発明を説明するためのものであり、本発明の範囲を限定するものではない。   Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention.

本出願は、２０１２年４月２日に出願された、日本国特許出願２０１２−８４２５８号に基づくものであり、その明細書、特許請求の範囲、図面及び要約書を含むものである。上記日本国特許出願における開示は、その全体が本明細書中に参照として含まれる。   This application is based on the JP Patent application 2012-84258 for which it applied on April 2, 2012, and the specification, a claim, drawing, and an abstract are included. The entire disclosure in the above Japanese patent application is incorporated herein by reference.

本発明の管継手は、空気調和機に用いられる接続管同士を接続するのに適している。また、本発明の空気調和機は、空調対象の空調に適している。また、本発明の接続管は、空気調和機に用いられる管継手に接続するのに適している。また、本発明の接続方法は、空気調和機に用いられる管継手と接続管とを接続するのに適している。 The pipe joint of the present invention is suitable for connecting connecting pipes used in an air conditioner. Moreover, the air conditioner of this invention is suitable for the air conditioning of air-conditioning object . Also, the connection pipe of the present invention is suitable for connection to a pipe joint for use in an air conditioner. The connection method of the present invention is suitable for connecting a pipe joint used in an air conditioner and a connection pipe.

１０、１０Ａ、１０Ｂ 管継手、２０ 管継手本体、２１ 挿入孔（第１挿入孔）、２２ テーパ面（第１接合面）、２３ ストレート孔面、２４ テーパ面（第３接合面）、２５ 雄ネジ部、 ３０ ナット部材、３１ 挿入孔（第２挿入孔）、３２ 保持面、３３ 雌ネジ部、３４ テーパ面（第２接合面）、３５ ストレート孔面、３６ テーパ面、５０ フレア加工ツール、５１ フレアダイス、５１ａ 貫通孔、５１ｂ テーパ面、５２ フレアコーン、 ６０ アダプター、６１ フランジ部、１００ 空気調和機、１０１ 接続管、１０１ａ 膨出部、１０１ｂ 接続管本体、１０１ｃ 拡径部、１０１ｄ 縮径部、１０２ 室内機、１０２ａ 接続口、１０３ 室外機、１０４ 閉止弁、 １１０ 管部材、２０１ 接続管、２０１ａ フレア部、θ１、θ２、θ３、θ４ 傾斜角度、Ｅ１、Ｅ２ 漏洩経路、Ｓ１、Ｓ２、Ｓ３、Ｓ４ シール部   10, 10A, 10B pipe joint, 20 pipe joint body, 21 insertion hole (first insertion hole), 22 taper surface (first joint surface), 23 straight hole surface, 24 taper surface (third joint surface), 25 male Thread portion, 30 Nut member, 31 Insertion hole (second insertion hole), 32 Holding surface, 33 Female thread portion, 34 Tapered surface (second joint surface), 35 Straight hole surface, 36 Tapered surface, 50 Flare tool, 51 Flare Dies, 51a Through Hole, 51b Tapered Surface, 52 Flare Cone, 60 Adapter, 61 Flange Part, 100 Air Conditioner, 101 Connection Pipe, 101a Expansion Part, 101b Connection Pipe Body, 101c Diameter Expansion Part, 101d Diameter Reduction Part, 102 indoor unit, 102a connection port, 103 outdoor unit, 104 shutoff valve, 110 pipe member, 201 connection pipe, 201a flare part, θ1 , Θ2, θ3, θ4 Inclination angle, E1, E2 Leakage path, S1, S2, S3, S4 Seal part

Claims (9)

流体が流れる接続管が接続される管継手であって、
外周面に雄ネジ部が形成されるとともに、前記接続管が挿入され、前記接続管と接合するための第１接合面を有する第１挿入孔が形成された管継手本体と、
前記雄ネジ部が螺合される雌ネジ部と、前記接続管が挿入され、前記接続管と接合するための第２接合面とを有する第２挿入孔が形成されたナット部材と、
を有し、
前記管継手本体の前記第１挿入孔と、前記ナット部材の前記第２挿入孔とのいずれか一方には、前記管継手本体の軸に平行なストレート孔面を有し、
径方向に膨らんだ膨出部が、端部に形成された前記接続管が接続された場合、
前記管継手本体の前記雄ネジ部が、前記ナット部材の前記雌ネジ部に螺合されることにより、前記膨出部が、前記第１接合面と前記第２接合面とに挟まれ、
前記膨出部と前記第１接合面との接合部分が、前記流体の漏洩を防止する第１シール部を形成するとともに、前記膨出部と前記第２接合面との接合部分が、前記流体の漏洩を防止する第２シール部を形成し、
前記管継手本体の端面が、前記ナット部材の前記第２挿入孔の内周面の一部に接合し、前記流体の漏洩を防止する第３シール部が形成され、
前記膨出部は、前記第１接合面と前記第２接合面とに挟まれて、径方向に拡径することで、前記ストレート孔面に接合し、前記流体の漏洩を防止する第４シール部が形成される管継手。 A pipe joint to which a connecting pipe through which a fluid flows is connected,
A male threaded portion is formed on the outer peripheral surface, the connecting pipe is inserted, and a pipe joint body in which a first insertion hole having a first joining surface for joining with the connecting pipe is formed,
A nut member formed with a second insertion hole having a female screw portion into which the male screw portion is screwed, and a second joint surface into which the connection pipe is inserted and joined to the connection pipe;
Have
Either one of the first insertion hole of the pipe joint body and the second insertion hole of the nut member has a straight hole surface parallel to the axis of the pipe joint body,
When the bulging portion swelled in the radial direction is connected to the connecting pipe formed at the end,
The male thread part of the pipe joint body is screwed into the female thread part of the nut member, so that the bulging part is sandwiched between the first joint surface and the second joint surface,
A joint portion between the bulging portion and the first joint surface forms a first seal portion that prevents leakage of the fluid, and a joint portion between the bulge portion and the second joint surface is the fluid. Forming a second seal to prevent leakage of
The end face of the pipe joint main body is joined to a part of the inner peripheral surface of the second insertion hole of the nut member, and a third seal portion for preventing leakage of the fluid is formed,
The bulging portion is sandwiched between the first joint surface and the second joint surface, and is expanded in the radial direction so as to join the straight hole surface and prevent leakage of the fluid. Pipe joint where the part is formed. 前記管継手本体の端面には、前記ナット部材の前記第２接合面に平行な面の第３接合面が形成され、
径方向に膨らんだ前記膨出部が、端部に形成された前記接続管が接続された場合、前記第３シール部は、前記第３接合面が、前記第２挿入孔の前記第２接合面に接合することにより、形成される請求項１に記載の管継手。 A third joint surface that is parallel to the second joint surface of the nut member is formed on the end surface of the pipe joint body,
When the connecting pipe formed at the end of the bulging portion bulging in the radial direction is connected, the third sealing portion is connected to the second insertion hole of the second insertion hole. The pipe joint according to claim 1, which is formed by joining to a surface. 前記ストレート孔面は、前記管継手本体の前記第１挿入孔の開口近傍に形成されている請求項１又は２に記載の管継手。   The said straight hole surface is a pipe joint of Claim 1 or 2 currently formed in the opening vicinity of the said 1st insertion hole of the said pipe joint main body. 前記第１接合面は、前記管継手本体の軸方向に対して傾斜する傾斜面から構成され、
前記第１接合面の傾斜角度は、４３°〜４７°の範囲にある請求項１から３のいずれか一項に記載の管継手。 The first joint surface is composed of an inclined surface that is inclined with respect to the axial direction of the pipe joint body,
The pipe joint according to any one of claims 1 to 3, wherein an inclination angle of the first joint surface is in a range of 43 ° to 47 °. 前記第２接合面は、前記ナット部材の軸方向に対して傾斜する傾斜面から構成され、
前記第２接合面の傾斜角度は、４３°〜４７°の範囲にある請求項１から４のいずれか一項に記載の管継手。 The second joint surface is composed of an inclined surface that is inclined with respect to the axial direction of the nut member,
The pipe joint according to any one of claims 1 to 4, wherein an inclination angle of the second joint surface is in a range of 43 ° to 47 °. 冷凍サイクルの冷媒が流れる接続管と、
前記接続管に接続される請求項１から５のいずれか一項に記載の管継手と、
を有する空気調和機。 A connecting pipe through which the refrigerant of the refrigeration cycle flows;
The pipe joint according to any one of claims 1 to 5 connected to the connection pipe,
Having an air conditioner. 前記冷媒は、ジフルオロメタン（ＣＨ２Ｆ２）からなるＲ３２である請求項６に記載の空気調和機。 The air conditioner according to claim 6, wherein the refrigerant is R32 made of difluoromethane (CH 2 F 2 ). 流体が流れる接続管であって、
接続管本体と、
前記接続管本体の端部に形成され、前記接続管本体から径方向に拡がる拡径部と、前記拡径部から径方向に狭まる縮径部と、を有する膨出部と、
を有し、
外周面に雄ネジ部が形成されるとともに、前記接続管が挿入され、前記接続管と接合するための第１接合面を有する第１挿入孔が形成された管継手本体と、前記雄ネジ部が螺合される雌ネジ部と、前記接続管が挿入され、前記接続管と接合するための第２接合面とを有する第２挿入孔が形成されたナット部材と、を有し、前記管継手本体の前記第１挿入孔と、前記ナット部材の前記第２挿入孔とのいずれか一方には、前記管継手本体の軸に平行なストレート孔面をさらに有する管継手に接続した場合、
前記管継手本体の前記雄ネジ部が、前記ナット部材の前記雌ネジ部に螺合されることにより、前記膨出部が、前記第１接合面と前記第２接合面とに挟まれ、
前記膨出部と前記第１接合面との接合部分が、前記流体の漏洩を防止する第１シール部を形成するとともに、前記膨出部と前記第２接合面との接合部分が、前記流体の漏洩を防止する第２シール部を形成し、
前記管継手本体の端面が、前記ナット部材の前記第２挿入孔の内周面の一部に接合し、前記流体の漏洩を防止する第３シール部が形成され、
前記膨出部は、前記第１接合面と前記第２接合面とに挟まれて、径方向に拡径することで、前記ストレート孔面に接合し、前記流体の漏洩を防止する第４シール部が形成される
接続管。 A connecting pipe through which a fluid flows,
A connecting pipe body;
A bulging portion formed at an end portion of the connection pipe body, and having a diameter-expanded portion that expands in a radial direction from the connection tube body;
Have
A male threaded portion is formed on the outer peripheral surface, the pipe fitting body into which the connecting pipe is inserted and a first insertion hole having a first joining surface for joining with the connecting pipe is formed, and the male threaded portion A nut member in which a second insertion hole having a female thread portion into which the connection pipe is inserted and a second joint surface into which the connection pipe is inserted and joined to the connection pipe is formed. When one of the first insertion hole of the joint body and the second insertion hole of the nut member is connected to a pipe joint further having a straight hole surface parallel to the axis of the pipe joint body,
The male thread part of the pipe joint body is screwed into the female thread part of the nut member, so that the bulging part is sandwiched between the first joint surface and the second joint surface,
A joint portion between the bulging portion and the first joint surface forms a first seal portion that prevents leakage of the fluid, and a joint portion between the bulge portion and the second joint surface is the fluid. Forming a second seal to prevent leakage of
The end face of the pipe joint main body is joined to a part of the inner peripheral surface of the second insertion hole of the nut member, and a third seal portion for preventing leakage of the fluid is formed,
The bulging portion is sandwiched between the first joint surface and the second joint surface, and is expanded in the radial direction so as to join the straight hole surface and prevent leakage of the fluid. The connecting pipe where the part is formed. 外周面に雄ネジ部が形成されるとともに、流体が流れる接続管が挿入され、前記接続管と接合するための第１接合面を有する第１挿入孔が形成された管継手本体と、前記雄ネジ部が螺合される雌ネジ部と、前記接続管が挿入され、前記接続管と接合するための第２接合面とを有する第２挿入孔が形成されたナット部材と、を有し、前記管継手本体の前記第１挿入孔と、前記ナット部材の前記第２挿入孔とのいずれか一方には、前記管継手本体の軸に平行なストレート孔面を有する管継手と、
径方向に膨らんだ膨出部が、端部に形成された前記接続管と、を接続する方法であって、
前記管継手本体の前記雄ネジ部を、前記ナット部材の前記雌ネジ部に螺合することにより、前記膨出部を、前記第１接合面と前記第２接合面とで挟み、前記膨出部と前記第１接合面との接合部分を、前記流体の漏洩を防止する第１シール部に形成するとともに、前記膨出部と前記第２接合面との接合部分を、前記流体の漏洩を防止する第２シール部に形成し、
前記管継手本体の端面を、前記ナット部材の前記第２挿入孔の内周面の一部に接合させて、前記流体の漏洩を防止する第３シール部を形成し、
前記膨出部を、前記第１接合面と前記第２接合面とで挟み、径方向に拡径させることで、前記ストレート孔面に接合させて、前記流体の漏洩を防止する第４シール部を形成する、
接続方法。 A male pipe portion is formed on the outer peripheral surface, a connection pipe through which a fluid flows is inserted, and a pipe joint body having a first insertion hole having a first joint surface for joining to the connection pipe, and the male joint A nut member in which a second insertion hole having a female screw part into which a screw part is screwed and a second joint surface into which the connection pipe is inserted and joined to the connection pipe is formed; In either one of the first insertion hole of the pipe joint body and the second insertion hole of the nut member, a pipe joint having a straight hole surface parallel to the axis of the pipe joint body,
A bulging portion swelled in a radial direction is a method of connecting the connecting pipe formed at an end portion,
By screwing the male thread portion of the pipe joint body into the female thread portion of the nut member, the bulging portion is sandwiched between the first joint surface and the second joint surface, and the bulge A joint portion between the bulging portion and the second joint surface is formed to prevent leakage of the fluid. Formed in the second seal portion to prevent,
Joining the end surface of the pipe joint body to a part of the inner peripheral surface of the second insertion hole of the nut member to form a third seal portion for preventing leakage of the fluid;
A fourth seal portion for preventing leakage of the fluid by sandwiching the bulging portion between the first joint surface and the second joint surface and expanding the diameter in the radial direction to join the straight hole surface. Forming,
Connection method.
JP2014509091A 2012-04-02 2013-03-07 Pipe joint, air conditioner, connection pipe, and connection method Expired - Fee Related JP5968427B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012084258 2012-04-02
JP2012084258 2012-04-02
PCT/JP2013/056340 WO2013150858A1 (en) 2012-04-02 2013-03-07 Pipe joint, air conditioner, method for producing connecting pipe, connecting pipe, and connection method

Publications (2)

Publication Number Publication Date
JPWO2013150858A1 JPWO2013150858A1 (en) 2015-12-17
JP5968427B2 true JP5968427B2 (en) 2016-08-10

Family

ID=49023570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014509091A Expired - Fee Related JP5968427B2 (en) 2012-04-02 2013-03-07 Pipe joint, air conditioner, connection pipe, and connection method

Country Status (6)

Country Link
US (1) US9797532B2 (en)
EP (1) EP2835568B1 (en)
JP (1) JP5968427B2 (en)
CN (2) CN203162387U (en)
AU (1) AU2013244568B2 (en)
WO (1) WO2013150858A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102374973B1 (en) * 2021-09-13 2022-03-16 주식회사 화영 Manufacturing method of high pressure pipe

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2573864C2 (en) * 2011-04-01 2016-01-27 Паркер Ханнифин Мэньюфекчуринг Джемени Гмбх Унд Ко. Кг Thread connection with high compression strength for pipelines and hose lines with taper thread
EP2835568B1 (en) * 2012-04-02 2019-07-24 Mitsubishi Electric Corporation Pipe joint connected with a pipe, and connection method therefor
DE102013105300A1 (en) * 2013-05-23 2014-11-27 Voss Fluid Gmbh pipe connection
JP5891537B2 (en) * 2014-07-07 2016-03-23 Smc株式会社 Pipe fitting
US10060628B2 (en) * 2015-03-26 2018-08-28 General Electric Company Systems and methods for creating a seal about a liquid fuel injector in a gas turbine engine
GB2539456A (en) * 2015-06-16 2016-12-21 Woodford Heating & Energy Ltd A pipe for connection with a pipe fitting
DE102015111455A1 (en) * 2015-07-15 2017-01-19 Esser-Werke Gmbh & Co. Kg Process for the production of a conveying pipe for the transport of solids as well as conveying pipe for the transport of solids
SE1551317A1 (en) * 2015-10-13 2017-04-14 Sapa As Brake tube connector and brake tube connector assembly
US11035509B2 (en) * 2016-05-19 2021-06-15 Control Flow, Inc. Metal-to-metal well equipment seal
JP6734179B2 (en) * 2016-10-31 2020-08-05 三桜工業株式会社 Fuel piping
CN107631110B (en) * 2017-10-18 2023-08-01 台州市路桥振兴机械有限公司 Nut assembly and connecting method thereof
WO2020142710A1 (en) * 2019-01-03 2020-07-09 Mega Fluid Systems, Inc. Insert fitting devices, assemblies and couplings
JP7233977B2 (en) * 2019-03-07 2023-03-07 株式会社ブリヂストン Pipe joint, piping construction management system, and piping construction management method
WO2021109674A1 (en) * 2019-12-04 2021-06-10 浙江盾安人工环境股份有限公司 Disassembly-prevention nut assembly and air conditioning system
KR102713842B1 (en) * 2021-01-25 2024-10-10 화이트 나이트 플루이드 핸들링 인크. Fittings for sealing a wire within a tube
CN216742873U (en) * 2021-12-18 2022-06-14 浙江盾安人工环境股份有限公司 Stop valve and air conditioning unit thereof
DE202022104716U1 (en) * 2022-08-19 2022-09-05 Ti Automotive Technology Center Gmbh connection arrangement
WO2026028754A1 (en) * 2024-08-01 2026-02-05 臼井国際産業株式会社 Piping material

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US920963A (en) * 1906-03-12 1909-05-11 Joseph A Doyle Pipe-coupling.
US1817854A (en) * 1929-06-11 1931-08-04 Sorensen John Process of producing coupling flanges
US1858136A (en) * 1931-03-27 1932-05-10 Alphonse Brenner Company Inc Coupling
US1961453A (en) * 1932-05-25 1934-06-05 Bundy Tubing Co Tube coupling
US2438529A (en) * 1945-01-25 1948-03-30 George V Woodling Sleeve nut coupling
NL71844C (en) * 1945-04-30 1900-01-01
US2469851A (en) * 1946-01-18 1949-05-10 Weatherhead Co Tube coupling
US2463883A (en) * 1946-04-24 1949-03-08 Furlow Cate Mfg Company Inc Tube coupling
US2477677A (en) * 1947-11-22 1949-08-02 George V Woodling Turnable coupling member
US2545168A (en) * 1948-10-07 1951-03-13 Brockway Company Pipe connector
US2685461A (en) * 1949-09-22 1954-08-03 Mueller Co Pipe coupling
US2748463A (en) * 1949-09-22 1956-06-05 Mueller Co Method of coupling pipes
US2599389A (en) * 1949-10-17 1952-06-03 Douglas Aircraft Co Inc Hydraulic fitting
JPS5817982Y2 (en) * 1978-12-27 1983-04-12 臼井国際産業株式会社 Pipe joint structure at the pipe end
FR2464424A1 (en) * 1979-09-03 1981-03-06 Aerospatiale METHOD FOR PROVIDING A CANALIZATION OF A CONNECTING TIP AND PIPELINE THUS OBTAINED
JPH0135027Y2 (en) * 1985-01-29 1989-10-25
US4765661A (en) * 1985-11-08 1988-08-23 Diesel Kiki Co., Ltd. Union joint assembly
JPS63144827A (en) * 1986-12-06 1988-06-17 Masahiro Tokuyama Manufacture of flanged hollow shaft
DE3701555C1 (en) * 1987-01-21 1988-07-07 Mannesmann Ag Pipe connection for thin-walled, small-caliber metal pipes
CA2086302C (en) * 1992-12-24 1997-06-03 Horst Udo Petersen System for forming end flanges on pipes
JP3492503B2 (en) 1997-11-11 2004-02-03 日野自動車株式会社 Pipe fittings
JPH11218269A (en) 1998-02-02 1999-08-10 Toyota Motor Corp Flare fittings and surface treatment method
US6089623A (en) 1998-10-20 2000-07-18 Ford Motor Company Fluid coupling having stepped synchronized threads
US6792782B2 (en) * 1999-11-30 2004-09-21 Parker Hannifin Sa Method for deforming a tube near one of its ends and tool used in this method
JP2003074768A (en) 2001-08-31 2003-03-12 Daikin Ind Ltd Pipe fitting structure
CN2562025Y (en) * 2002-07-02 2003-07-23 上海汽车空调配件有限公司 Tubing for threaded joint
DE202004012959U1 (en) 2004-08-18 2004-10-14 Kohlhage Verbindungstechnik Gmbh & Co. Kg Spherical liner-type screw connection for e.g. fuel injection lines in motor vehicles has upset spherical liner at end of pipe, with conical contact area to engage on union nut
CN2934841Y (en) * 2006-05-25 2007-08-15 刘勇 Connection tube assembly between indoor and outdoor machine of air conditioner
US8079621B2 (en) * 2007-11-15 2011-12-20 Lincoln Brass Works, Inc. Reinforced bead tube design
EP2360405A1 (en) * 2010-02-19 2011-08-24 TI Automotive (Heidelberg) GmbH Tube connection device
JP5758640B2 (en) * 2011-02-04 2015-08-05 株式会社フロウエル Tube fitting
EP2835568B1 (en) * 2012-04-02 2019-07-24 Mitsubishi Electric Corporation Pipe joint connected with a pipe, and connection method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102374973B1 (en) * 2021-09-13 2022-03-16 주식회사 화영 Manufacturing method of high pressure pipe

Also Published As

Publication number Publication date
JPWO2013150858A1 (en) 2015-12-17
AU2013244568B2 (en) 2016-05-12
US20150008669A1 (en) 2015-01-08
WO2013150858A1 (en) 2013-10-10
US9797532B2 (en) 2017-10-24
EP2835568A4 (en) 2016-01-06
CN203162387U (en) 2013-08-28
EP2835568B1 (en) 2019-07-24
CN103363208B (en) 2016-03-09
AU2013244568A1 (en) 2014-08-21
CN103363208A (en) 2013-10-23
EP2835568A1 (en) 2015-02-11

Similar Documents

Publication Publication Date Title
JP5968427B2 (en) Pipe joint, air conditioner, connection pipe, and connection method
ES2899456T3 (en) Refrigeration pipe fitting assembly and method of using same for joining refrigeration pipes to each other
KR100983157B1 (en) Flareless pipe connection structure, flareless pipe connection method, and local pipe connection method
CN106195484A (en) Pipeline connection universal joint
US20250020247A1 (en) Press fitting device, components and method
CN101268299B (en) Pipe joints, refrigeration equipment, heat pump hot water suppliers, shut-off valves, water supply piping, piping connection methods, and on-site piping construction methods
AU2017353896B2 (en) Press fitting device, components and method
CN112334719B (en) Stop valve and method for producing same
CN105637276A (en) Press fitting device, component and method
JP5993538B1 (en) Connection mechanism for copper pipe and joint refrigerant piping
JP2013151013A (en) Connecting structure of stainless steel pipe and other metal pipe
US20100084861A1 (en) Bite type pipe coupling, refrigeration device, and water heating device
JP5812410B2 (en) Pipe fitting tool and pipe connection structure
JP4730079B2 (en) A bite type pipe joint that also serves as a flare type pipe joint
JP7764550B1 (en) Compressor and refrigeration cycle device
CN108526636B (en) Shock-absorbing tube and manufacturing method thereof
CN107940129A (en) Pipeline connection structure and have its vehicle air conditioning system
CN214789566U (en) Split type air conditioner pipeline connecting system
KR20100099646A (en) The male conduit of an air conditioner refrigerant recursion line making method besides
CN117189964A (en) Heat pump equipment and pipeline connection sealing components
WO2022123416A1 (en) Plastic cap pipe fitting
CN205592527U (en) Pipeline components and air conditioners
JP2007218301A (en) Pipe fittings, refrigeration equipment, heat pump water heater, and water supply piping
JPH03113190A (en) Insertion type pipe joint
JP2001050443A (en) Pipe joint

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20151020

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20151216

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160607

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160705

R150 Certificate of patent or registration of utility model

Ref document number: 5968427

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees